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European Journal of Wood and Wood Products

Erschienen in:

11.10.2023 | Original Article

A synergistic enhancement of the bonding performance of urea-formaldehyde adhesives using an organic-inorganic hybrid strategy

verfasst von: Zheng Yang, Lulu Liang, Qing Dong, Furong Chen, Yajun Pang, Hao Chen, Sai Wu, Zhehong Shen

Erschienen in: European Journal of Wood and Wood Products | Ausgabe 1/2024

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Abstract

Bamboo resources can contribute to reducing wood shortages and neutralizing CO₂. However, laminated bamboo-veneer lumber (LBVL), the main bamboo product, has limited applications due to its poor bonding performance. It is because the urea-formaldehyde (UF) adhesive used in LBVL does not have high bonding stability, which results in the warping and cracking of the board. Therefore, a simple but effective method has been proposed to improve the bonding performance of UF adhesives. Specifically, UF adhesives are strengthened and toughened through a synergistic interaction with acrylate emulsion and clay minerals. Consequently, the prepared LBVL shows excellent bonding strength with an average dip-peeling of 0.92 cm. Furthermore, compared to the unmodified UF adhesive, the synergistically enhanced UF adhesive has a prolonged gelation time, a lower free formaldehyde release level, and improved thermal stability. In addition, the prepared LBVL exhibits reduced flammability based on cone calorimetry results. Herein, the combined effect of acrylate emulsion and clay minerals was investigated, resulting in a synergistic enhancement of bonding performance and other properties. This enhancement not only contributes to the reduction of wood shortages but also aids in the neutralization of CO₂.

Vorheriger Artikel Gap-filling properties of adhesives used for cross-laminated timber

Nächster Artikel Modified pine needles as a formaldehyde scavenger for urea-formaldehyde resin in plywood production

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Titel: A synergistic enhancement of the bonding performance of urea-formaldehyde adhesives using an organic-inorganic hybrid strategy
verfasst von: Zheng Yang
Lulu Liang
Qing Dong
Furong Chen
Yajun Pang
Hao Chen
Sai Wu
Zhehong Shen
Publikationsdatum: 11.10.2023
Verlag: Springer Berlin Heidelberg
Erschienen in: European Journal of Wood and Wood Products / Ausgabe 1/2024
Print ISSN: 0018-3768
Elektronische ISSN: 1436-736X
DOI: https://doi.org/10.1007/s00107-023-02005-7

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